How to Scale Analog Values for PLC Programming

How to Scale Analog Values for PLC Programming

L
LeMaster Tech
712 Video Views·May 24, 2026

In this tutorial, I break down what analog sensors and values are, and how to normalize and scale them in PLC code, and then we build an example scaling function together from scratch in Siemens TIA Portal.
We'll cover:
- What analog values are and how they differ from Boolean (digital) values
- How normalizing functions work
- How to scale a normalized value and what engineering units are
- Live build of a working scale and normalize function in TIA Portal

Whether you're new to PLC programming or have always wanted a clearer explanation of analog scaling, this simple and easy to follow video is for you!

Resources
PLC used in this tutorial: https://amzn.to/4cgkOPa
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